Bug 208607 - reconfigure libpng for smaller imglib2. r=pavlov, sr=blizzard

modules/libimg/png/MOZCHANGES

@@ -5,3 +5,6 @@ Changes made to pristine png source by mozilla.org developers.
 
 2002/10/06  -- OS/2 bustage fix.  IBM compiler defines __IBMCPP__ instead
                of IBMCPP__ (pngconf.h).
+
+2003/06/11  -- add mozpngconf.h (bug 208607)
+

modules/libimg/png/Makefile.in

@@ -54,7 +54,7 @@ CSRCS		= \
 		pngwutil.c \
 		$(NULL)
 
-EXPORTS		= png.h pngconf.h
+EXPORTS		= png.h pngconf.h mozpngconf.h
 
 LOCAL_INCLUDES	= -I$(srcdir)
 

modules/libimg/png/mozpngconf.h

@@ -0,0 +1,75 @@
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is mozilla libpng configuration.
+ *
+ * The Initial Developer of the Original Code is
+ * Tim Rowley.
+ * Portions created by the Initial Developer are Copyright (C) 2003
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s): Tim Rowley <tor@cs.brown.edu>
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 2 or later (the "GPL"), or
+ * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+#ifndef MOZPNGCONF_H
+#define MOZPNGCONF_H
+
+#define PNG_NO_INFO_IMAGE
+#define PNG_NO_READ_BACKGROUND
+#define PNG_NO_READ_DITHER
+#define PNG_NO_READ_INVERT
+#define PNG_NO_READ_SHIFT
+#define PNG_NO_READ_PACK
+#define PNG_NO_READ_PACKSWAP
+#define PNG_NO_READ_FILLER
+#define PNG_NO_READ_SWAP_ALPHA
+#define PNG_NO_READ_INVERT_ALPHA
+#define PNG_NO_READ_RGB_TO_GRAY
+#define PNG_NO_READ_USER_TRANSFORM
+#define PNG_NO_READ_bKGD
+#define PNG_NO_READ_cHRM
+#define PNG_NO_READ_hIST
+#define PNG_NO_READ_iCCP
+#define PNG_NO_READ_pCAL
+#define PNG_NO_READ_pHYs
+#define PNG_NO_READ_sBIT
+#define PNG_NO_READ_sCAL
+#define PNG_NO_READ_sPLT
+#define PNG_NO_READ_TEXT
+#define PNG_NO_READ_tIME
+#define PNG_NO_READ_UNKNOWN_CHUNKS
+#define PNG_NO_READ_USER_CHUNKS
+#define PNG_NO_USER_MEM
+#define PNG_NO_READ_EMPTY_PLTE
+#define PNG_NO_FIXED_POINT_SUPPORTED
+#define PNG_NO_READ_OPT_PLTE
+#define PNG_NO_MNG_FEATURES
+
+#define PNG_NO_WRITE_TRANSFORMS
+#define PNG_NO_WRITE_EMPTY_PLTE
+#define PNG_NO_WRITE_ANCILLARY_CHUNKS
+
+#endif

modules/libimg/png/pngconf.h

@@ -16,6 +16,11 @@
 #ifndef PNGCONF_H
 #define PNGCONF_H
 
+/* This include defines the subset of the libpng library that
+ * mozilla utilizes.
+ */
+#include "mozpngconf.h"
+
 /* This is the size of the compression buffer, and thus the size of
  * an IDAT chunk.  Make this whatever size you feel is best for your
  * machine.  One of these will be allocated per png_struct.  When this